How to change icon in ItemSliding?

I need to change icon from arrow-dropleft to arrow-dropright when slide is open. Is it possible? On the api page there is no event for slide status.

<ion-item-sliding *ngFor="let activity of activities">
    <ion-item>
        <ion-icon name="arrow-dropleft" style="float:right"></ion-icon>
        <h2>{{ activity['Event type'] }}</h2>
    </ion-item>
</ion-item-sliding>